§4.9.3高斯高通滤波器GHPF ■ Example of Gaussian highpass filtering 没有ringing,且比巴特沃斯光滑 ● a 脑 aaaaaaaa aaa aaa aa a周周周周周a 血团进忽凯 Input image D0=30 D0=60 D0=160  Example of Gaussian highpass filtering Input image 没有ringing，且比巴特沃斯光滑 𝑫𝟎 = 𝟑𝟎 𝑫𝟎 = 𝟔𝟎 𝑫𝟎 = 𝟏𝟔𝟎 §4.9.3 高斯高通滤波器GHPF